Just because you might not be on it all the time, doesn’t mean you want it to automatically lock. Unfortunately the option to disable the screen lock is not available by default. The fix is to simply add the option to the registry.
Access the Registry the standard way, start / run / regedit then change the following Attributes key from hex 1 to hex 2
Now that it’s set, you should be able to go into the Control Panel / Power Options, then “Change plan settings”. Now you can drop down to display / console lock and set it to 0 for disable.